sewage treatment bacteria action mechanism in wastewater system

1. Aerobic microorganism wastewater treatment bacteria can use dissolved oxygen (DO) in water to decompose organic pollutants into water and carbon dioxide, or convert them into nutrients of wastewater treatment microorganisms, and use these nutrients for reproduction. At the same time, they can degrade pollutants to achieve the purpose of decontamination and deodorization. This treatment method is called aerobic treatment, and the activated sludge method is the most widely used.

2. Anaerobic wastewater treatment microorganisms reduce nitrate without dissolved oxygen (using oxygen in nitrate) to produce nitrogen through denitrification. This method is widely used in wastewater treatment. Acidogenic bacteria (general Anaerobic Microorganisms) are often used in the early acidification reaction of absolute anaerobic microorganism wastewater treatment process.

3. Anaerobic biological treatment is the acidification reaction of acid producing bacteria, which decomposes sugars or proteins in sewage into monosaccharides, amino acids or low-grade fatty acids (organic acids). Acetic acid producing bacteria (absolute Anaerobic Microorganisms) are used to decompose monosaccharides, amino acids or organic acids in sewage into acetic acid. Finally, methanogenic bacteria (absolute anaerobic microorganisms) decompose acetic acid to produce methane.

4. Most wastewater treatment microorganisms feed on pollutants, such as carbohydrate, protein and fat. They can be decomposed by various wastewater treatment microorganisms and become nutrients for their own growth and reproduction. However, the use of photosynthetic bacteria and Bacillus can transform the odor gas hydrogen sulfide into sulfur element needed for its own growth, so as to achieve the purpose of deodorization.

5. Microbial wastewater treatment strains have polysaccharide viscous substances, which can adsorb pollutants in the environment. This feature is often applied to the adsorption of heavy metal ions.